Action result object

Here's how action result object is structured (all keys are optional):

Name	When	Value
data?	Execution is successful.	What you returned in action's server code.
validationError?	Some input values are invalid.	A partial Record of input schema keys as key, and string[] as value. Example: { email: ["Email is required."] }
serverError?	An error occurs during action's server code execution.	A string that by default is "Something went wrong while executing the operation" for every server error that occurs, but this is configurable when instantiating a new client.